CPU utilization of the central node increases beyond 95%

[vitaliichupryna]

Hi Community!

On my current project we have problem with CPU, the CPU utilization of the central node increases beyond 95%.

I've checked logs, but didn't find the reason of issue, in the same time on the community I found possible bug:

https://support.qlik.com/articles/000059664

Have you implemented this solution, if so do you see any negative effects?

Regards,

Vitalii

[Bastien_Laugiero · Accepted solution]

Hello! 

When troubleshooting CPU starvation issue the most important thing to check first is what process consumes the CPU. 

For Qlik Sense it will likely be between the Engine and the Repository service. 

• In case it is the Engine, then the root cause is on a specific application or reload task. You can use the QIX Performance logs to determine that: https://community.qlik.com/t5/Knowledge-Base/How-to-enable-Qlik-Sense-QIX-performance-logging-and-us...
• In case it is the Repository, the mentioned article could help but there are other possible causes. For example it could be your User Directory Synchronization causing this if you are syncing a lot of users. It's a good idea to look at the Repository -> Trace -> System.log to see if you can find recurring error messages in there. 

Hope this helps!